Siemens Aktiengesellschaft

Andreas Gerner

John-William Strauss

Johann Messner

Ludwig Hügelschäfer

Anja Ackermann

Armin Werner

Johann Meβner

Günter Ünzelmann

John Strauss

In order to provide a method for regulating a reactive power compensator, which is connected to an alternating current line having multiple phases, wherein for each phase an actual voltage V, Vand Vpresent thereon is detected and from the actual voltages V, Vand Va counter system actual fraction is calculated. A control circuit suppresses the counter system actual fraction. A feedback loop determines the level of suppression of the counter system actual fraction with the help of controlled parameters. The method enables an adjustment of the counter system that is largely independent from operating staff. Accordingly, a comparator unit compares the counter system actual fraction to the counter system target fraction and defines the controlled parameters as a function of the comparison.

Method for controlling a VAr compensator

An apparatus for detecting and processing a multiplicity of measured values in an HVDCT system has measuring units for detecting measured variables of the HVDCT system, while obtaining measured values, and preprocessing units which are connected to one another in series, are each connected to at least one measuring unit and are connected to a control, regulation and monitoring system by means of a last preprocessing unit which is connected downstream of the rest of the preprocessing units, each preprocessing unit being set up to receive and preprocess the measured values, while obtaining optical measured values, and transmitting both the optical measured values generated by it and the optical measured values received from the upstream preprocessing units to a downstream preprocessing unit or to the control, regulation and monitoring system, with the result that the last preprocessing unit provides all of the measured values for the control, regulation and monitoring system.

Apparatus for detection and processing of a multiplicity of measured values in an HVDC transmission installation

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Nürnberg, Germany

Andreas Gerner